How Many Hours Do You Need a Virtual Assistant?
See also: What Is a Virtual Assistant?, How to Hire a Virtual Assistant, How Much Does a Virtual Assistant Cost?
Choosing a VA engagement is partly about finding the right person - and partly about buying the right amount of their time. Too few hours and you're still drowning in tasks. Too many and you're paying for capacity that sits idle. Getting this number right from the start determines whether your VA investment delivers clear ROI or leaves you wondering if it was worth it.
Here's a structured way to figure out how many VA hours your specific situation actually requires.
Why Getting Hours Right Matters
VA services are typically priced in hours - either tracked hourly or bundled into monthly retainers. The cost difference between tiers can be significant:
- 10 hrs/week (40 hrs/month): $400–$720/month for a Philippines-based VA
- 20 hrs/week (80 hrs/month): $800–$1,440/month
- 40 hrs/week (160 hrs/month): $1,600–$2,880/month
Overestimating by 20 hours/month means you're spending $200–$400 more than necessary. Underestimating means tasks pile up, your VA is bottlenecked, and you're still stuck handling overflow - negating much of the value.
Step 1: The Weekly Task Audit
For one full work week, log every task you do that someone else could handle with proper instruction. Don't filter yourself - write everything down, from checking email to formatting spreadsheets to posting on Instagram.
At the end of the week, for each task note:
- Approximate time it took
- How often it recurs (daily, weekly, monthly, one-time)
- Skill level required (admin, skilled, specialist)
This audit is the foundation of your hour estimate.
Step 2: Convert Tasks to Weekly Hours
Group your tasks and calculate recurring weekly hours:
Example task list:
- Email inbox management: 45 min/day × 5 = 3.75 hrs/week
- Scheduling and calendar management: 30 min/day × 5 = 2.5 hrs/week
- Social media posting (3 platforms): 1.5 hrs/week
- CRM data entry: 2 hrs/week
- Customer inquiry responses: 1 hr/week
- Research tasks: 1.5 hrs/week
- Invoice follow-up: 1 hr/week
Total: ~13.75 hrs/week
This business owner needs approximately 14 hours of VA time per week - a part-time engagement. Not 5 hours (too little to make meaningful progress), not 40 (far more than the task volume warrants).
Hour Requirements by Common VA Role Type
If your task audit doesn't give you enough clarity, here are typical hour ranges by role:
Administrative VA (scheduling, email, data entry):
- Solo founder, moderate volume: 10–15 hrs/week
- Small team support (2–5 people): 20–30 hrs/week
- Large team or high-volume exec support: 35–40 hrs/week
Customer Service VA:
- Low-volume (under 50 tickets/week): 10–20 hrs/week
- Medium-volume (50–200 tickets/week): 25–35 hrs/week
- High-volume: Full-time + possible second VA
Social Media VA:
- 1–2 platforms, light posting: 5–10 hrs/week
- 3–4 platforms, regular posting + engagement: 15–20 hrs/week
- Full content creation + strategy + community: 25–35 hrs/week
Bookkeeping VA:
- Small business (under 200 transactions/month): 5–10 hrs/week
- Growing business (200–500 transactions): 10–20 hrs/week
- Complex or multi-entity: 20–30 hrs/week
Research VA:
- Ad hoc research requests: 5–10 hrs/week
- Regular competitive intelligence or lead research: 15–25 hrs/week
Step 3: Add a Growth Buffer
Your VA hour estimate should reflect not just where you are now, but where you'll be in 3–6 months. If your business is growing, your task volume will grow with it.
For businesses growing 20–40% annually, add a 20% buffer to your current hour estimate:
- 14 hrs/week current need + 20% buffer = ~17 hrs/week
- Round to 20 hrs/week for a clean retainer bracket
This prevents you from hitting the ceiling of your VA's capacity just as your business accelerates.
Step 4: Decide Between Part-Time and Full-Time
The practical breakpoint for most VA arrangements is 20 hours per week:
Under 20 hrs/week (part-time):
- Best for: founders who need regular help but not all-day coverage
- Advantage: lower monthly cost ($400–$1,200/month)
- Consideration: VA may have other clients; scheduling coordination needed
- Structure: defined working windows (e.g., Mon–Fri, 9am–1pm)
20–40 hrs/week (full-time or near-full-time):
- Best for: businesses where VA support is central to daily operations
- Advantage: dedicated availability, deeper institutional knowledge
- Consideration: higher cost ($1,200–$2,500/month) but dramatically more throughput
- Structure: full business hours coverage with task queue management
Most businesses that start part-time find themselves upgrading to full-time within 3–6 months - not because they're wasting hours but because delegating becomes a habit, they discover more tasks worth offloading, and the ROI becomes obvious.
When 5 Hours a Week Isn't Enough
A common mistake is hiring a VA for 5 hours/week to "test the waters." This is rarely sufficient to create real value. At 5 hours/week:
- The VA barely has time to stay current with your backlog
- Onboarding overhead consumes a significant percentage of early hours
- You spend almost as much time assigning and reviewing as you save
- There's no capacity to take on new task types or handle surprises
The minimum engagement that produces clear, positive ROI for most businesses is 10 hours per week. Start there at minimum, even if it feels like a stretch.
Tracking and Adjusting Hours Over Time
Once you've started, review your hour utilization monthly:
- Consistent under-utilization (using 70% or less of purchased hours): Consider reducing the retainer or identifying more tasks to delegate
- Consistent near-capacity (using 90%+ of hours): Prepare to scale up before you hit the ceiling
- High variability month-to-month: Consider hourly pricing instead of a fixed retainer
Hour needs evolve. Build in a quarterly review of your VA's utilization and adjust up or down based on data, not assumptions.
Ready to Get Started?
Stealth Agents helps you figure out exactly how many hours you need before you commit - through a structured free consultation that walks through your task list and recommends the right engagement size. No guesswork, no over-buying.
Book your free VA hours consultation with Stealth Agents and get a tailored recommendation for your situation.